bonues damage apply plugin for RMMV

make independent bonus damage which just like another skill in BattleManager.queueForceAction...

this damage can trigger effect(yep_buffstatecore) or lifesteal(yep_lifesteal) or (YEP_X_ArmorScaling)
you can set this damage as physical damage which can calculate HIT EVA...
 you can set this damage as element 1 which will calculate target's elementRate 1 ...(-1 is your attack element)

State presentation:(yep_buffstatecore)

Name：Frozen

<Help Description>
can't move until someone breaks the ice and you will get another magical ice damage
based on your mhp.
</Help Description>
 <Custom React Effect>
if(value > 0 && this._isCounter != true){
user.applyDamage(target,'b.mhp * 0.25 - b.mdf',0,1,3,100,0,25);
target.removeState(15)////15 is this stateId
}
</Custom React Effect>

(dummy skill/damage skill should not be acquired by player)